41:null 42:["$","title",null,{"children":"Illinois COVID Testing | Hugh | Observable"}] 48:Tb70,timeSeriesChart = () => { // default configuration var width = 800; var height = width * 0.5; var timeSeries; var colorScale; var margin = { top: 5, right: 20, bottom: 30, left: 60 } function timeSeriesChartReturnValue() { const seriesNames = Object.keys(timeSeries[0]).filter(seriesName => seriesName != "date"); const seriesClass = seriesName => seriesName.includes('average') ? 'average' : 'positivity'; const yIsPercent = seriesNames.some(seriesName => seriesName.includes('positivity')); // boolean const yMax = Math.max(...seriesNames.map(seriesName => d3.max(timeSeries.map(d => d[seriesName])))); const xScale = d3.scaleTime() .domain(d3.extent(timeSeries, d => d.date)) .range([margin.left, width - margin.right]); const yScale = d3.scaleLinear() .domain([0, yMax]).nice() .range([height - margin.bottom, margin.top]); const xAxis = g => g .attr("transform", `translate(0, ${height - margin.bottom})`) .call(d3.axisBottom(xScale).ticks(d3.timeMonth, 1).tickSizeOuter(0).tickFormat(d3.timeFormat("%b %Y"))); const yAxis = g => g .attr("transform", `translate(${margin.left}, 0)`) .call(d3.axisLeft(yScale).tickFormat(yIsPercent ? d3.format('.0%') : null)); const svg = d3.create('svg') .attr("viewBox", [0, 0, width, height]); svg.append("g") .call(xAxis); svg.append("g") .call(yAxis); const lineGenerator = seriesName => d3.line() .defined(d => !isNaN(d[seriesName])) .x(d => xScale(d.date)) .y(d => yScale(d[seriesName])); const appendPath = seriesName => { svg.append('g') .append('path') .datum(timeSeries) .attr('d', lineGenerator(seriesName)) .attr('id', seriesName) .attr('class', seriesClass(seriesName)) .style('stroke', colorScale(seriesName.split(' ')[0])) .append('title') .text(seriesName); } seriesNames.map(seriesName => appendPath(seriesName)); return svg.node(); } // getter-setter methods that support method chaining timeSeriesChartReturnValue.width = function(value) { if (!arguments.length) return width; width = value; return this; }; timeSeriesChartReturnValue.height = function(value) { if (!arguments.length) return height; height = value; return this; }; timeSeriesChartReturnValue.timeSeries = function(value) { if (!arguments.length) return timeSeries; timeSeries = value; return this; }; timeSeriesChartReturnValue.colorScale = function(value) { if (!arguments.length) return colorScale; colorScale = value; return this; }; timeSeriesChartReturnValue.margin = function(value) { if (!arguments.length) return margin; margin = value; return this; }; return timeSeriesChartReturnValue; }49:[] 46:{"id":"14370313f3873936","slug":"positivity","title":"Illinois COVID Testing","thumbnail":"4e531499d1cd94edd6a5575b4674810d9915972aebec3a0196c796b706141394","access_level":"public","create_time":"$D2020-11-22T22:51:01.973Z","update_time":"$D2021-04-15T19:22:37.786Z","view_time":null,"first_public_time":"$D2021-01-03T21:59:30.034Z","has_unpublished_edits":null,"fork":false,"stars":0,"starred":false,"owner":{"type":"team","id":"19d63ba1bb706983","login":"hughdevlin","name":"Hugh","avatar_url":"https://avatars-next.observableusercontent.com/3855a0736872056a5d9935eac93135690611be581eecc094283af2704b215a2b","tier":"starter_2024","bio":"","following":false},"version":2497,"publish_version":2497,"role":null,"authored":false,"authors":[{"type":"individual","id":"ee6e4e8d8597a695","login":"hughdevlin","name":"Hugh","avatar_url":"https://avatars-next.observableusercontent.com/3855a0736872056a5d9935eac93135690611be581eecc094283af2704b215a2b","tier":null,"bio":"","following":false}],"members":[{"type":"individual","id":"ee6e4e8d8597a695","login":"hughdevlin","name":"Hugh","avatar_url":"https://avatars-next.observableusercontent.com/3855a0736872056a5d9935eac93135690611be581eecc094283af2704b215a2b","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":0,"collection":null,"type":"notebook","body":{"titling":"auto","title":"Illinois COVID Testing","cells":[{"id":0,"value":"title= md`# Illinois COVID Testing `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":394,"value":"subtitle2 = md ` ### Illinois, Chicago, and ZIP code ${zipCode}, ${dateToString(startDate)} through ${dateToString(endDate)} `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":668,"value":"legend = swatches({\n color: colorScale\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2173,"value":"md `## Illinois tests and cases `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2171,"value":"html `

${\n timeSeriesChart()\n .timeSeries(illinoisTestingTimeSeries.filter(d => byDateRange(d.date, startDate, endDate)))\n .colorScale(colorScale)()\n}

${\n timeSeriesChart()\n .timeSeries(illinoisPositivityTimeSeries.filter(d => byDateRange(d.date, startDate, endDate)))\n .colorScale(colorScale)()\n}

${\n timeSeriesChart()\n .timeSeries(chicagoTestingTimeSeries.filter(d => byDateRange(d.date, startDate, endDate)))\n .colorScale(colorScale)()\n}

${\n timeSeriesChart()\n .timeSeries(chicagoPositivityTimeSeries.filter(d => byDateRange(d.date, startDate, endDate)))\n .colorScale(colorScale)()\n}

${\n timeSeriesChart()\n .timeSeries(zipCodeTestingTimeSeries.filter(d => byDateRange(d.date, startDate, endDate)))\n .colorScale(colorScale)()\n}

${\n timeSeriesChart()\n .timeSeries(zipCodePositivityTimeSeries.filter(d => byDateRange(d.date, startDate, endDate)))\n .colorScale(colorScale)()\n}

${\n timeSeriesChart()\n .timeSeries(positivityTimeSeries.filter(d => byDateRange(d.date, startDate, endDate)))\n .colorScale(colorScale)()\n}

`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1700,"value":"md `## Options `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1516,"value":"md `ZIP Code: `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":368,"value":"viewof zipCode = html``","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1522,"value":"md `Start: `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1430,"value":"viewof startDate = html` `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1526,"value":"md `End: `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1449,"value":"viewof endDate = html` `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1532,"value":"md `See [IDPH Testing Statistics](https://www.dph.illinois.gov/covid19/testing-statistics?regionID=0): \"On October 14, 2020 the Illinois Department of Public Health (IDPH) began including both molecular and antigen tests in the reporting of the number of statewide total test performed in Illinois.\" `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1811,"value":"md `## Time series chart definition `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2270,"value":"$48","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":676,"value":"colorScale = d3.scaleOrdinal([zipCode, 'Chicago', 'Illinois'], d3.schemeSet1)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":138,"value":"style = html``","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":43,"value":"md `## Data`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":4,"value":"dataUrl = \"https://il-covid-zip-data.s3.us-east-2.amazonaws.com/latest/zips.csv\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":10,"value":"proxyUrl = \"https://observable-cors.glitch.me/\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":5,"value":"illinoisCovidZipData = d3.csv(proxyUrl + dataUrl).then(response => response)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":843,"value":"observations = illinoisCovidZipData\n // parse\n .map(d => ({\n date: d.date,\n zipcode: Number.parseInt(d.zipcode),\n tests: Number.parseInt(d.total_tested_change),\n cases: Number.parseInt(d.confirmed_cases_change)\n }))\n // exclude out-of-state\n .filter(d => isIllinoisZipCode(d.zipcode))\n // counts must be non-negative\n .filter(d => d.tests >= 0)\n .filter(d => d.cases >= 0)\n // the two oldest dates are zero tests and zero cases for all ZIP codes\n .filter(d => d.date != '2020-04-18')\n .filter(d => d.date != '2020-04-19')\n .sort((a, b) => a.date == b.date ? (a.zipcode > b.zipcode) : (a.date > b.date)) // ascending, by date, zip code within date","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1003,"value":"md `## Descriptive statistics `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":285,"value":"observedZipCodes = [...new Set(observations.map(d => d.zipcode))].sort((a, b) => a > b) // ascending","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":309,"value":"observedDates = [...new Set(observations.map(d => d.date))].sort((a, b) => a > b) // ascending","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":377,"value":"earliestDate = observedDates[0]","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":381,"value":"mostRecentDate = observedDates.slice(-1)[0]","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1043,"value":"// expected number of days, inclusive\nexpectedObservationCount = (() => {\n const milliSecondsPerDay = 24 * 60 * 60 * 1000; // hours/day * minutes/hour * seconds/minute * milliseconds/second\n return ((new Date(mostRecentDate)) - (new Date(earliestDate))) / milliSecondsPerDay + 1\n})();","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":481,"value":"expectedDates = Array.from({length: expectedObservationCount}, (v, i) => {\n const d = new Date(earliestDate);\n d.setDate(d.getDate() + i);\n return dateToString(d);\n})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2255,"value":"missingDates = expectedDates.filter(d => !observedDates.includes(d))","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":998,"value":"md `## Functions `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1791,"value":"totalByDate = (observations) => (\n groupReduce(\n observations,\n d => d.date,\n (acc, curValue) => ({tests: acc.tests + curValue.tests, cases: acc.cases + curValue.cases}),\n () => ({tests: 0, cases: 0})\n )\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":583,"value":"positivity = (tests, cases) => tests > 0 ? ((cases > 0 ? cases : 0) / tests) : 0.0","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2056,"value":"dateToString = (d) => d.toISOString().split('T')[0]","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2047,"value":"byDateRange = (d, startDate, endDate) => d >= startDate && d <= endDate // inclusive","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":905,"value":"md `## Illinois `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":293,"value":"md ` The [Illinois Department of Public Health](https://www.dph.illinois.gov/covid19/covid19-statistics) reports test results by the home ZIP code of the subject, who may be a non-resident of Illinois. See also [Zip codes by State](http://www.structnet.com/instructions/zip_min_max_by_state.html). `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":356,"value":"isIllinoisZipCode = z => z >= 60001 && z <= 62999","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1795,"value":"illinoisTotals = totalByDate(observations)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2474,"value":"illinoisTestingTimeSeries = expectedDates\n .map(expectedDate => {\n const totals = illinoisTotals.get(expectedDate)\n return {\n date: new Date(expectedDate),\n ['Illinois tests']: totals ? totals.tests : NaN,\n ['Illinois cases']: totals ? totals.cases : NaN\n }\n })","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1059,"value":"illinoisPositivity = [...illinoisTotals.values()].map(d => positivity(d.tests, d.cases))","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1828,"value":"illinoisAveragePositivity = movingAverage(illinoisPositivity, 7)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2134,"value":"illinoisPositivityTimeSeries = expectedDates\n .map(expectedDate => {\n const i = [...illinoisTotals.keys()].findIndex(observedDate => observedDate === expectedDate)\n return {\n date: new Date(expectedDate),\n ['Illinois positivity']: i === -1 ? NaN : illinoisPositivity[i],\n ['Illinois average positivity']: i === -1 ? NaN : illinoisAveragePositivity[i]\n }\n })","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":901,"value":"md `## Chicago `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":363,"value":"isChicagoZipCode = z => z >= 60601 && z <= 60699","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":881,"value":"chicagoObservations = observations\n .filter(z => isChicagoZipCode(z.zipcode))\n .sort((a, b) => a.date == b.date ? (a.zipcode > b.zipcode) : (a.date > b.date)) // ascending, by date, zip code within date","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2450,"value":"chicagoDates = new Set(chicagoObservations.map(d => d.date))","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2452,"value":"missingChicagoDates = expectedDates.filter(x => !chicagoDates.has(x)) // set difference","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1800,"value":"chicagoTotals = totalByDate(chicagoObservations)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2454,"value":"chicagoTestingTimeSeries = expectedDates\n .map(expectedDate => {\n const totals = chicagoTotals.get(expectedDate)\n return {\n date: new Date(expectedDate),\n ['Chicago tests']: totals ? totals.tests : NaN,\n ['Chicago cases']: totals ? totals.cases : NaN\n }\n })","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2466,"value":"chicagoPositivity = [...chicagoTotals.values()].map(d => positivity(d.tests, d.cases))","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1832,"value":"chicagoAveragePositivity = movingAverage(chicagoPositivity, 7)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2459,"value":"chicagoPositivityTimeSeries = expectedDates\n .map(expectedDate => {\n const i = [...chicagoTotals.keys()].findIndex(observedDate => observedDate === expectedDate)\n return {\n date: new Date(expectedDate),\n ['Chicago positivity']: i === -1 ? NaN : chicagoPositivity[i],\n ['Chicago average positivity']: i === -1 ? NaN : chicagoAveragePositivity[i]\n }\n })","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":897,"value":"md `## ZIP code `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":21,"value":"zipCodeObservations = observations\n .filter(x => x.zipcode == zipCode) // coercion \n .map(({date, cases, tests}) => ({date, cases, tests})) // object destructuring to drop ZIP code property\n .sort((a, b) => a.date > b.date) // ascending","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2205,"value":"zipCodeDates = new Set(zipCodeObservations.map(d => d.date))","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2444,"value":"missingZipCodeDates = expectedDates.filter(x => !zipCodeDates.has(x)) // set difference","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2042,"value":"zipCodeTestingTimeSeries = expectedDates\n .map(expectedDate => {\n const i = zipCodeObservations.findIndex(observation => observation.date === expectedDate)\n return {\n date: new Date(expectedDate), \n [zipCode + ' tests']: i === -1 ? NaN : zipCodeObservations[i].tests,\n [zipCode + ' cases']: i === -1 ? NaN : zipCodeObservations[i].cases\n }\n })","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":785,"value":"zipCodePositivity = zipCodeObservations.map(d => positivity(d.tests, d.cases))","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1838,"value":"zipCodeAveragePositivity = movingAverage(zipCodePositivity, 7)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2404,"value":"zipCodePositivityTimeSeries = expectedDates\n .map(expectedDate => {\n const i = zipCodeObservations.findIndex(observation => observation.date === expectedDate)\n return {\n date: new Date(expectedDate), \n [zipCode + ' positivity']: i === -1 ? NaN : zipCodePositivity[i], \n [zipCode + ' average positivity']: i === -1 ? NaN : zipCodeAveragePositivity[i]\n }\n })\n","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2266,"value":"md `## Comparative positivity `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2373,"value":"positivityTimeSeries = expectedDates\n .map(expectedDate => {\n const illinoisPositivity = illinoisPositivityTimeSeries.find(x => dateToString(x.date) === expectedDate)\n const chicagoPositivity = chicagoPositivityTimeSeries.find(x => dateToString(x.date) === expectedDate)\n const zipCodePositivity = zipCodePositivityTimeSeries.find(x => dateToString(x.date) === expectedDate)\n return {\n 'date': new Date(expectedDate),\n ['Illinois average positivity']: illinoisPositivity ? illinoisPositivity['Illinois average positivity'] : NaN,\n ['Chicago average positivity']: chicagoPositivity ? chicagoPositivity['Chicago average positivity'] : NaN,\n [zipCode + ' average positivity']: zipCodePositivity ? zipCodePositivity[zipCode + ' average positivity'] : NaN\n }\n })","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1619,"value":"md `## References `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1617,"value":"md `* [Johns Hopkins Bloomberg School of Public Health](https://www.jhsph.edu/): *[COVID-19 Testing: Understanding the “Percent Positive”](https://www.jhsph.edu/covid-19/articles/covid-19-testing-understanding-the-percent-positive.html)* `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1626,"value":"md `* [Centers for Disease Control and Prevention](https://www.cdc.gov/): *[Calculating Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Laboratory Test Percent Positivity: CDC Methods and Considerations for Comparisons and Interpretation](https://www.cdc.gov/coronavirus/2019-ncov/lab/resources/calculating-percent-positivity.html)* `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1632,"value":"md `* [Illinois Department of Public Health](https://www.dph.illinois.gov/): *[Testing Statistics](https://www.dph.illinois.gov/covid19/testing-statistics?regionID=0)* `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":39,"value":"md `## Libraries`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":51,"value":"d3 = require('d3')","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":670,"value":"import {swatches} from \"@d3/color-legend\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":216,"value":"import {movingAverage} from \"@d3/moving-average\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":1752,"value":"import {groupReduce} from '@mbostock/group'","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W49","stdlib":"1"}} 47:"$46:body"